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Abstract
Swallow-tailed mesogens of liquid crystalline side group polysiloxanes show a very strong tendency to form an antiparallel order in the short range and to connect in this way different oligomer strands - like a molecular zip-fastener. To check the strength of such a molecular cooperation swallow-tailed side groups of oligomers were exchanged stepwise by laterally aryl substituted mesogenes. The gradual destruction of the zip-like gearing caused by this variation can be observed by dielectric measurements. Comparing investigations show that the tendency to form antiparallel package is greater for the oligomers under discussion than in mixtures of the corresponding monomers.